Hewlett, NY Radon Levels
Check local Hewlett radon levels and find certified testing and mitigation professionals to keep your home safe
Hewlett, NY Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Nassau County, NY
Zip Code
11557
Located in Nassau County within the New York City Metro area, Hewlett sits on Long Island where coastal plain geology typically produces lower radon levels, though testing data for ZIP code 11557 remains limited. Long Island's sandy soils and glacial deposits generally result in minimal radon accumulation, but individual homes can still benefit from professional assessment. Even in lower-risk coastal areas, testing provides valuable peace of mind for homeowners concerned about indoor air quality.
Hewlett, NY Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Hewlett?
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Radon FAQ for Hewlett, NY
What EPA Radon Zone is Hewlett in?
Hewlett and the 11557 zip code are in Nassau County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in Hewlett?
Radon mitigation in Hewlett typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Hewlett?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.
Most Active Radon Markets in New York
Cities in New York with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Brooklyn | 10.80 pCi/L | 5 |
| Oneonta | 6.50 pCi/L | 4 |
| Clifton Park | 3.75 pCi/L | 4 |
| Elmira | 15.00 pCi/L | 3 |
| Saugerties | 10.67 pCi/L | 3 |
| Staten Island | 4.00 pCi/L | 3 |
| New York | 9.00 pCi/L | 2 |
| Yonkers | 8.00 pCi/L | 2 |
| Horseheads | 7.50 pCi/L | 2 |
| Poughkeepsie | 16.00 pCi/L | 1 |